Improvement in governors



j. TEM,

Izq' i N,PETERS. MU-UTHOGRAPMER. WASHINGTON. RC.

UNITED STATES PATENT OFFICE.

J.T. HIGH, OF RAHWTAY, NE\V JERSEY.

IMPROVEMENT IN GOVERNOPLS.

Specitieation forming part oi' Letters Patent No. 45,5252, datedDecember 2U, 1864; antedated December 14, 1864.

To all ir/tom it may concern:

Be it known that l, J. T. RICH, of Hallway, in the county of Union andState ot' New Jersey, have invented a new and Improved Gov ernor forSteanrEngines and other Motors; and I do hereby declare that thefollowing is a t'ull, clear. and exact description ofthe same, referencebeing had to the accompanying drawings, formingpartot this ipecilication, in which- Figure l is a central vertical section ot' thefrovernor. Fig. 2 is a horizontal section of tie same.

Similar letters ot' reference indicate corresponding parts in bothligures.

This invention consists in a spindle furV nished with spiral blades or4wings rotating in a cylinder containing oil or other liquid, and aspring applied to the said spindle to press it longitudinally in onedirection. Thepressure ot the faces of the blades againstthe liquid,produced by their revolution, tends to produce a longitudinal movementot the spindle in the opposite direct-ion to thepressure ofthe spring,such tendency being greater or less, according` to the velocity ot'revolution, and the spindle being connected with the regulator ot' theengine or motor, its longitudinal movement is made the means ot'operating upon the regulator to govern the movement ot" the engine ormotor.

To enab e others skilled in the art to make and apply my invention, lwill proceed to describe its construction and operation.

`A is the cylinder containing the oil or other liquid, represented asbeing supported iu an upright'position by suitable standards, B, P. C isthe rotating spindle passing` longitudi nally and centrally throughthecylinder A. In the bottom ot' the cylinder, there is a stu llinghox, a,to prevent leakage of the oil or other liquid around the spindle, and onthe t ip thereofis a guide, Z1, to keep the spindle upright. The saidspindle is i'ree to move longitudinally, as well as rotate. l) l) arethespiral wings or blades firmly secured to the spindle (l. These wingsor blades resemble those of a screw-propeller. On the lower part of thesaid spindle there is a bevel-gear, E, or pulley, to which to applypower from the engine or motor to produce its rotary motion. Thishevelgear or pulley should be litted to the The lower end ot1 the saidrod is to be connected with the throttle-valve or regulator in suchmanner that the upward movement of the spindle and rod will tend toreduce the speed ollthe engine or motor and the downward movement willproduce an opposite effect. Above the center of the cylinder A there isplaced the stationary spring-box F,

containing the spiral spring G, which surrounds the upper part of therod d., and which presses upon the upper collar, c, of the said rod andso tends to depress the said rod and the spindle (l. The rotary motiongiven to the spindle C is in such direction that the pressure of thefaces of the wings or blades l) upon the oil or other liquid in thecylinder tends to make the said blades rise and carry the spindle upwardin opposition to the downward pressure ofthe spring G, which is of suchstrength that the upward and downward pressures upon the spindle balanceeach other when the regulator is in position to give the proper speed tothe engine or motor with an average pressure of the steam or othermotive agent, and an average lvad on the engine or motor.

W'hen the speed of the motor begins to increase, the increase ofvelocity of the rctary motion ofthe spindle and its bladescauses theblades and spindle to rise and so operate on the regulator as to reducethe supply of the motive agent in such degree as to restore the properspeed of the motor, and when the speed ofthe motor begins to decrease anopposite eli'ect is produced on the blades and spindle,and consequentlyupon the regulator, and theproper speed of the motor is restored.

rlhe governor, constructed as represented in .the drawings, with a,spring, G, may be arg ranged in a horizontal or inclined position,instead of in the vertical position represented,

I am aware that a governor operating on the same general principle asmine, but with a weight instead of a spring, is described in a patentgranted to Henry Burt on the 31st of August, 1844.

The advantages I claim over Burts governor are, first, a compens atingspring to resist the pressure ot' the screw, which admits theoperation of the governor at any speed, from the pivot-start until ithas obtained its maximum number ot' revolutions, and prevents too suddenchange of speed from injurious effects upon the engine; second, by theconstruction of my governor I am enabled to operate it in any position,which is a great advantage, especially for marine engines 5 third, inthe transmission of motion from the screw-spindle to the throttle-valvethe power is augmented, instead of reduced, as is the case with mostgovernors. In my governor I have alift of from terr pounds, twelveinches, which is double the throw required for any throttle-valve, sothat I can double, instead of reducing, power by means of levers, and soreduce friction and wear, besides absorbing only one-half the power fordriving. I also can use my governor as aspeedindicator by attaching apointer to the vertical stem, which passes through the spindle, andplacing a table opposite with gures corresponding to the number ofrevolutions necessary to raise the spindle a given height. In fine, mygovernor is easily adjusted, substantial, runs light, and requireslittle power for driving purposes, and readily controls thethrottle-valve, one of ordinary size having actual power of tive hundredpounds lift at the throttle.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the screw D, spindle C, and spring G, all arrangedand operating as and for thc purposes specified.

JL'HN T. RICH. W'itnesses:

JAMES P. HALL, M. M. LIVINGSTON.

